US dollars accepted almost everywhere and dispensed from most ATMs; carry colones for small towns, bus fares and rural shops. Credit cards generally accepted.
Restaurants Your bill will usually include a 10% service charge. If not, you might leave a small tip.
Hotels Tip the bellhop/porter US$1 to US$5 per service and the housekeeper US$1 to US$2 per day in top-end hotels, less in budget places.
Taxis Tip only if some special service is provided.
Guides Tip US$5 to US$15 per person per day. Tip the tour driver about half of what you tip the guide.